diff --git a/src/main/java/com/hobak/happinessql/domain/activity/application/ActivityListService.java b/src/main/java/com/hobak/happinessql/domain/activity/application/ActivityListService.java
index eb9d927..881ca64 100644
--- a/src/main/java/com/hobak/happinessql/domain/activity/application/ActivityListService.java
+++ b/src/main/java/com/hobak/happinessql/domain/activity/application/ActivityListService.java
@@ -8,8 +8,6 @@
 import com.hobak.happinessql.domain.activity.dto.CategoryDto;
 import com.hobak.happinessql.domain.activity.repository.ActivityRepository;
 import com.hobak.happinessql.domain.activity.repository.CategoryRepository;
-import com.hobak.happinessql.domain.user.domain.User;
-import com.hobak.happinessql.domain.user.application.UserFindService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -25,25 +23,26 @@ public class ActivityListService {
 
     private final ActivityRepository activityRepository;
     private final CategoryRepository categoryRepository;
-    private final UserFindService userFindService;
 
     public ActivityListResponseDto getActivitiesByUserId(Long userId) {
-        User user = userFindService.findUserById(userId);
         List<CategoryDto> categoryDtos = new ArrayList<>();
 
-        List<Category> categories = categoryRepository.findAll();
+        List<Category> categories = categoryRepository.findByUserIdIsNull();
         for (Category category : categories) {
-            List<ActivityDto> activityDtos = fetchActivityDtosByCategory(category, user);
+            List<ActivityDto> activityDtos = fetchActivityDtosByCategory(category);
             CategoryDto categoryDto = ActivityConverter.toCategoryDto(category, activityDtos);
             categoryDtos.add(categoryDto);
         }
-
+        Category ectCategory = categoryRepository.findByUserId(userId);
+        List<ActivityDto> ectActivities = fetchActivityDtosByCategory(ectCategory);
+        CategoryDto categoryDto2 = ActivityConverter.toCategoryDto(ectCategory, ectActivities);
+        categoryDtos.add(categoryDto2);
         return ActivityListResponseDto.builder()
                 .categories(categoryDtos)
                 .build();
     }
 
-    private List<ActivityDto> fetchActivityDtosByCategory(Category category, User user) {
+    private List<ActivityDto> fetchActivityDtosByCategory(Category category) {
         List<Activity> activities = activityRepository.findByCategory(category);
         return activities.stream()
                 .map(activity -> ActivityConverter.toActivityDto(activity))
diff --git a/src/main/java/com/hobak/happinessql/domain/activity/domain/Category.java b/src/main/java/com/hobak/happinessql/domain/activity/domain/Category.java
index 36ad489..cee5c6c 100644
--- a/src/main/java/com/hobak/happinessql/domain/activity/domain/Category.java
+++ b/src/main/java/com/hobak/happinessql/domain/activity/domain/Category.java
@@ -25,11 +25,15 @@ public class Category extends BaseTimeEntity {
     @OneToMany(mappedBy = "category", cascade = CascadeType.REMOVE, orphanRemoval = true)
     private List<Activity> activities;
 
+    @Column(nullable = true)
+    private Long userId;
+
     @Builder
-    public Category(Long categoryId, String name, List<Activity> activities) {
+    public Category(Long categoryId, String name, List<Activity> activities, Long userId) {
         this.categoryId = categoryId;
         this.name = name;
         this.activities = activities;
+        this.userId = userId;
     }
 }
 
diff --git a/src/main/java/com/hobak/happinessql/domain/activity/repository/CategoryRepository.java b/src/main/java/com/hobak/happinessql/domain/activity/repository/CategoryRepository.java
index 233b698..9ab9746 100644
--- a/src/main/java/com/hobak/happinessql/domain/activity/repository/CategoryRepository.java
+++ b/src/main/java/com/hobak/happinessql/domain/activity/repository/CategoryRepository.java
@@ -1,14 +1,14 @@
 package com.hobak.happinessql.domain.activity.repository;
 
-import com.hobak.happinessql.domain.activity.domain.Activity;
 import com.hobak.happinessql.domain.activity.domain.Category;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.List;
 import java.util.Optional;
 
 public interface CategoryRepository extends JpaRepository<Category, Long>{
-    Page<Category> findByCategoryIdGreaterThanOrderByCategoryIdAsc(Long lastCategoryId, Pageable pageable);
     Optional<Category> findByName(String name);
+    List<Category> findByUserIdIsNull();
+
+    Category findByUserId(Long userId);
 }
\ No newline at end of file